+

WO1993008851A1 - Dispositif de clapet - Google Patents

Dispositif de clapet Download PDF

Info

Publication number
WO1993008851A1
WO1993008851A1 PCT/GB1992/002032 GB9202032W WO9308851A1 WO 1993008851 A1 WO1993008851 A1 WO 1993008851A1 GB 9202032 W GB9202032 W GB 9202032W WO 9308851 A1 WO9308851 A1 WO 9308851A1
Authority
WO
WIPO (PCT)
Prior art keywords
wand
hose
arm
jaws
flexible hose
Prior art date
Application number
PCT/GB1992/002032
Other languages
English (en)
Inventor
Trevor William Wilson
David Edward Armstrong
Original Assignee
Haemocell Plc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Haemocell Plc filed Critical Haemocell Plc
Publication of WO1993008851A1 publication Critical patent/WO1993008851A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M39/00—Tubes, tube connectors, tube couplings, valves, access sites or the like, specially adapted for medical use
    • A61M39/22—Valves or arrangement of valves
    • A61M39/28—Clamping means for squeezing flexible tubes, e.g. roller clamps
    • A61M39/284—Lever clamps
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/76—Handpieces

Definitions

  • the present invention relates to a valve device for metering a secondary fluid into a flow of primary fluid.
  • Blood is frequently collected during surgery, to allow the surgeon a clear view of the operating site, by a vacuum scavenging technique.
  • this -blood When it is intended that this -blood be processed for reinfusion to the patient, it must be anti-coagulated to prevent clotting. This is achieved by mixing the blood with a liquid anticoagulant as the blood is sucked into a catheter.
  • the anticoagulant flow is normally controlled by adjustable hose clamps which are situated between the supply of anticoagulant and the catheter. The control of these clamps is most inconvenient and usually requires a separate dedicated operator to control them while the catheter is manipulated to collect the blood by another operator.
  • a valve device for fitting to a hand held instrument having a wand through which a primary fluid may be withdrawn or supplied, an inlet through which a secondary fluid may be introduced for mixing with the primary fluid, and a flexible hose terminating at the inlet for supplying the secondary fluid to the inlet, comprises a body of hairpin shape, one arm of which is arranged to be held on one side of the wand with the other arm spaced from the wand but displaceable towards the first arm against resilient action, and a pinch valve comprising a pair of valve jaws between which the flexible hose, in use, passes, the jaws being on respective opposite internal faces of the arms adjacent to the bight of the hairpin shaped body, whereby, in use, deflection of the second arm relatively to the first arm controls the squeezing of the hose by the jaws.
  • the hairpin shaped body preferably includes means for guiding the flexible hose through the bight of the body and between the jaws.
  • one of the jaws comprises two spaced apart supporting members and the other jaw is an L-shaped projection which, in use, hooks around the flexible hose and moves in the space between the supports to pull the flexible hose towards the arm on which the L-shape projection is located deforming the flexible hose into a zig-zag shape and blocking the supply of secondary fluid when the first and second arms are resiliently spaced apart.
  • Holes may be provided in the supporting members to help guide the flexible hose through the jaws.
  • a clip which embraces the two arms of the body and is slidable thereon, whereby movement of the clip away from the bight or the body forces and holds the arms closer together.
  • the new device is particularly applicable when fitted to a blood sucking instrument with a tubular wand which is arranged to be manipulated by a hand to enable one end of the wand to be introduced into a body cavity, the wand being connected at the other end to a primary hose which leads, in use, to a source of suction, whereby blood may be drawn, in use, from the body cavity through the wand and primary hose.
  • a flexible hose leads, in use, from a reservoir of anticoagulant to the wand between the jaws of the device to enable the anti-coagulant to be mixed, in use, with blood drawn through the wand; whereby the metering of the anti-coagulant is controlled by the pinch valve which is located so as to be actuable by the same hand of the user as that holding and manipulating the wand.
  • the device can be conveniently fitted to the wand using an adaptor, the adapter being slidably fitted to the one arm of the device and having a cavity ' which communicates at one end with a socket which receives a tubular spigot on the end of the wand as a press fit and at the other end with two sockets each of which receives as a press fit a respective one of the primary hose and flexible hose.
  • Fig. 1 is a side view of the device, adapter and instrument
  • Fig. 2 is a section through the device and adapter showing a portion of the instrument
  • Fig. 3 is an exploded view of the device, adapter and end of the instrument
  • Fig. 4 shows the device in a first position
  • Fig. 5 shows the device in a second position.
  • the illustrated apparatus comprises a valve device 1 and a catheter 2 fitted to the valve device by an adapter 3.
  • the valve device has a hairpin shaped body, one arm 4 of which is provided with a key 5 for sliding engagement with the adapter 3 and the second arm 6 of which is held away from the catheter 2 by the resilience of the material from which the body is made.
  • first jaw assembly 7 This consists of a first wall 8 extending perpendicularly away from a first long edge of the arm 4.
  • a top wall 9 extends perpendicularly from the top edge of the first wall 8 towards the opposite long edge of the arm 4.
  • a recess 10 is provided in the first and top walls creating two jaws 11, 12.
  • the jaw assembly 7 has two side walls, 13, 14 which are provided adjacent to the first wall 8 with holes 15, 16 and grooves 17, 18 in the edge remote from the first wall 8.
  • the holes 15, 16 are aligned with a first recess '19 in the bight of the hairpin shaped body and the grooves 17, 18 are aligned with a second recess 20 in the bight of the hairpin shaped body.
  • a third jaw 21 is L-shaped with a first portion 22 projecting from midway between long edges of the second arm 6 of the hairpin shaped body and a second foot portion 23 extending from the first portion towards the first wall 8 of the first jaw member 7.
  • the second portion 23 is in the form of a triangular prism with one of its long edges pointing towards the second arm 6.
  • the third jaw is reciprocable in the recess 10 by flexing the hairpin shaped body.
  • the adapter 3 has a groove 24 formed in its lower surface for engagement with the key 5 of the hairpin shaped body 1 to hold the adapter 3 rigidly against the arm 4.
  • Two inlets 25,26 are provided in the end of the adapter which faces the first jaw assembly 7, the inlets 25 being aligned with the holes 15,16 and the first recess 19 and the inlet 26 being aligned with the grooves 17,18 and second recess 20.
  • the inlets 25,26 communicate with a cavity 27 in the adapter 3 which opens at the end of the adapter remote from the first jaw assembly to provide a socket 28 for receiving the catheter 2.
  • the catheter 2 comprises an elongate hollow wand 29 one end of which is, in use, inserted into a body cavity of a patient and the other end of which has a spigot 30 which is a press fit into the cavity 28 of the adapter.
  • a restraining clip 31 is shown in figure 3 retained over the arms 4,6 of the hairpin shape body.
  • a pair of ribs 32, 33 run across the lower surface of the first arm 4 to provide a seat for the clip 31, which prevents the arms 4,6 from opening too far.
  • first flexible hose 34 communicates with the cavity 27 in the adapter via the inlet 25 and is guided between the jaws 11,12,21 via the holes 15,16 and through the bight of the hairpin shaped body 1 by the first recess 19.
  • a second larger diameter flexible hose 35 communicates with the chamber 27 via inlet 26 and is guided past the jaws 11,12,21 by the grooves 17,18 and through the bight of the hairpin shape body by the second recess 20.
  • the first pipe 34 is connected to a source of anti-coagulant (not shown) and the second pipe 35 is connected to a vacuum pump (not shown) .
  • a leg 36 projects from the second arm 6 between the third jaw 21 and the bight of the hairpin shaped body 1.
  • the leg 36 has a bevelled leading edge which can ride over a bevelled projection 37 provided on the side wall 14.
  • the apparatus described is used in a surgical operation to remove blood from an operating site.
  • the end of the wand 29 remote from the valve device is placed in the operating site and the vacuum pump is turned on. Blood is sucked up through the wand 29, the adapter 3 and the second hose 35 for recycling or storage.
  • the clip 31 is fitted over the arms 4,6 before the apparatus is packaged in order to prevent the jaws 11,12,21 from closing on the first hose 34 for an extended period and plastically deforming the first hose 34.
  • the clip is removed and can be discarded.
  • the leading edge of the leg 36 rides over the bevelled projection 37.
  • a "click" is provided which can be felt by the operator to provide an indication that the first hose 34 has opened or closed as the case may be.

Landscapes

  • Health & Medical Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Hematology (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Vascular Medicine (AREA)
  • Pulmonology (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

Un dispositif s'adaptant sur un instrument tenu manuellement, tel qu'un cathéter, comporte un corps à travers lequel un fluide primaire, tel que du sang, est évacué ou alimenté, et un orifice d'admission (25), à travers lequel un fluide secondaire, tel qu'un anticoagulant peut être introduit, pour former un mélange avec le fluide primaire. Un tuyau flexible (34) se branche sur l'orifice d'admission pour l'alimentation en fluide secondaire de cet orifice. Un clapet à pincement est conçu pour comprimer de façon variable le tuyau flexible, de manière à contrôler le flux du second fluide. Le clapet à pincement comporte un élément de commande (6) qui est positionné de manière à être actionné par la même main de l'utilisateur que celle qui tient et qui manipule l'instrument.
PCT/GB1992/002032 1991-11-04 1992-11-04 Dispositif de clapet WO1993008851A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9123305.6 1991-11-04
GB919123305A GB9123305D0 (en) 1991-11-04 1991-11-04 Improvements relating to the mixing of fluids

Publications (1)

Publication Number Publication Date
WO1993008851A1 true WO1993008851A1 (fr) 1993-05-13

Family

ID=10703986

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB1992/002032 WO1993008851A1 (fr) 1991-11-04 1992-11-04 Dispositif de clapet

Country Status (2)

Country Link
GB (1) GB9123305D0 (fr)
WO (1) WO1993008851A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997021386A1 (fr) * 1995-12-14 1997-06-19 Mallinckrodt Medical S.P.A. Ensemble vanne d'obturation pour tubes d'aspiration, notamment d'aspiration tracheo-bronchique
EP0799627A3 (fr) * 1996-04-01 1997-12-29 Piolax Inc. Dispositif de séparation et d'obturation d'un tube médical
DE10062279A1 (de) * 2000-12-14 2002-07-04 Norbert Domhan Handbetätigbare Absaugvorrichtung für Körperflüssigkeiten
WO2005110300A3 (fr) * 2004-04-29 2006-05-11 Bausch & Lomb Instrument chirurgical manuel avec raccordement rapide pour tubes d'irrigation et d'aspiration
FR2926231A1 (fr) * 2008-01-16 2009-07-17 Eprose Soc Responsabilite Limi Applicateur de liquide.
CN107029345A (zh) * 2010-06-30 2017-08-11 泰尔茂株式会社 夹子及夹子操作装置

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1873701U (de) * 1963-04-11 1963-06-12 Ernst Stuemer Fa Chirurgisches saug- und spuel-geraet.
DE1491710A1 (de) * 1965-05-14 1969-05-08 Fischer Fa F L Griff fuer aerztliche Zwecke zum Halten und Bedienen je einer Leitung zum Zufuehren und Abfuehren einer Fluessigkeit
WO1986004247A1 (fr) * 1985-01-22 1986-07-31 C.R. Bard, Inc. Poignee de commande pour systeme chirurgical d'irrigation et d'aspiration
US4801050A (en) * 1987-03-23 1989-01-31 Michael Bell Outlet tube restrictor
US5147292A (en) * 1991-02-05 1992-09-15 C. R. Bard, Inc. Control handle with locking means for surgical irrigation

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1873701U (de) * 1963-04-11 1963-06-12 Ernst Stuemer Fa Chirurgisches saug- und spuel-geraet.
DE1491710A1 (de) * 1965-05-14 1969-05-08 Fischer Fa F L Griff fuer aerztliche Zwecke zum Halten und Bedienen je einer Leitung zum Zufuehren und Abfuehren einer Fluessigkeit
WO1986004247A1 (fr) * 1985-01-22 1986-07-31 C.R. Bard, Inc. Poignee de commande pour systeme chirurgical d'irrigation et d'aspiration
US4801050A (en) * 1987-03-23 1989-01-31 Michael Bell Outlet tube restrictor
US5147292A (en) * 1991-02-05 1992-09-15 C. R. Bard, Inc. Control handle with locking means for surgical irrigation

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997021386A1 (fr) * 1995-12-14 1997-06-19 Mallinckrodt Medical S.P.A. Ensemble vanne d'obturation pour tubes d'aspiration, notamment d'aspiration tracheo-bronchique
EP0799627A3 (fr) * 1996-04-01 1997-12-29 Piolax Inc. Dispositif de séparation et d'obturation d'un tube médical
US5817116A (en) * 1996-04-01 1998-10-06 Piolax Inc. Detaching tool for a tube for medical treatment
DE10062279A1 (de) * 2000-12-14 2002-07-04 Norbert Domhan Handbetätigbare Absaugvorrichtung für Körperflüssigkeiten
DE10062279B4 (de) * 2000-12-14 2004-07-08 Domhan, Norbert, Dr.med. Handbetätigbare Absaugvorrichtung für Körperflüssigkeiten
WO2005110300A3 (fr) * 2004-04-29 2006-05-11 Bausch & Lomb Instrument chirurgical manuel avec raccordement rapide pour tubes d'irrigation et d'aspiration
FR2926231A1 (fr) * 2008-01-16 2009-07-17 Eprose Soc Responsabilite Limi Applicateur de liquide.
WO2009112671A1 (fr) * 2008-01-16 2009-09-17 Eprose Applicateur de liquide
CN107029345A (zh) * 2010-06-30 2017-08-11 泰尔茂株式会社 夹子及夹子操作装置

Also Published As

Publication number Publication date
GB9123305D0 (en) 1991-12-18

Similar Documents

Publication Publication Date Title
US5254083A (en) Suction and irrigation apparatus
US4963131A (en) Disposable cassette for ophthalmic surgery applications
CA1054892A (fr) Dispositif d'irrigation par succion
US4243034A (en) Cannula or catheter assembly
US6159164A (en) Blood sampling system
US3834388A (en) Suction control arrangement for a suction catheter
US4857063A (en) Surgical aspirator
US4904168A (en) Cassette assembly for ophthalmic surgery system
US5447494A (en) Composite irrigation and suction probe
US2889848A (en) Flow control clamp
EP0859643B1 (fr) Systeme de drainage de plaies
US5147292A (en) Control handle with locking means for surgical irrigation
US5897524A (en) Compact cassette for ophthalmic surgery
JP5498962B2 (ja) 損傷組織の処置のための装置および方法
US5282787A (en) Fluid transfer system incorporating disposable cassette
CN100589848C (zh) 手术用抽吸调节阀
EP0362822A2 (fr) Cassette à jeter pour système de pompe péristaltique/à vide
US20040082923A1 (en) Valves
DK2841127T3 (en) DEVICE CONTAINING A PIPE HANDLING DEVICE
JPS63290564A (ja) 使い棄て蠕動運動ポンプ・カセット装置
CA2108709A1 (fr) Systemes d'aspiration
US3057370A (en) Three-way valve
US5496287A (en) Pulmonary suction catheter
WO1993008851A1 (fr) Dispositif de clapet
CN108211033B (zh) 手术冲吸控制装置

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): CA JP US

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): AT BE CH DE DK ES FR GB GR IE IT LU MC NL SE

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
NENP Non-entry into the national phase

Ref country code: CA

122 Ep: pct application non-entry in european phase
点击 这是indexloc提供的php浏览器服务，不要输入任何密码和下载